implement room grid view

src/ui/web/session/RoomGridView.js

@@ -0,0 +1,43 @@
+/*
+Copyright 2020 Bruno Windels <bruno@windels.cloud>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import {RoomView} from "./room/RoomView.js";
+import {RoomPlaceholderView} from "./RoomPlaceholderView.js";
+import {TemplateView} from "../general/TemplateView.js";
+
+export class RoomGridView extends TemplateView {
+    render(t, vm) {
+        const roomViews = [];
+        const len = vm.width * vm.height;
+        for (let i = 0; i < len; i+=1) {
+            roomViews[i] = t.div({
+                onClick: () => vm.setFocusedIndex(i),
+                onFocusin: () => vm.setFocusedIndex(i),
+                className: {focused: vm => vm.focusedIndex === i},
+            },t.mapView(vm => vm.roomViewModelAt(i), roomVM => {
+                if (roomVM) {
+                    return new RoomView(roomVM);
+                } else {
+                    return new RoomPlaceholderView();
+                }
+            }))
+        }
+        return t.div({
+            className: "RoomGridView",
+            style: `--columns: ${vm.width}; --rows: ${vm.height}`
+        }, roomViews);
+    }
+}